./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:02:37,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:02:37,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:02:37,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:02:37,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:02:37,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:02:37,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:02:37,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:02:37,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:02:37,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:02:37,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:02:37,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:02:37,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:02:37,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:02:37,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:02:37,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:02:37,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:02:37,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:02:37,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:02:37,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:02:37,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:02:37,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:02:37,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:02:37,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:02:37,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:02:37,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:02:37,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:02:37,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:02:37,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:02:37,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:02:37,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:02:37,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:02:37,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:02:37,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:02:37,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:02:37,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:02:37,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:02:37,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:02:37,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:02:37,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:02:37,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:02:37,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:02:37,669 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:02:37,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:02:37,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:02:37,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:02:37,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:02:37,672 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:02:37,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:02:37,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:02:37,672 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:02:37,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:02:37,673 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:02:37,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:02:37,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:02:37,674 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:02:37,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:02:37,675 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:02:37,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:02:37,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:02:37,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:02:37,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:02:37,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:02:37,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:02:37,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:02:37,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:02:37,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:02:37,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:02:37,677 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 12:02:37,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:02:37,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:02:37,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:02:37,962 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:02:37,963 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:02:37,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 12:02:38,920 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:02:39,110 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:02:39,111 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-08-30 12:02:39,116 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9f73ad2/b2b2c5761d8847b5b97996b0f3208bbb/FLAG1b65e7e38 [2023-08-30 12:02:39,124 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b9f73ad2/b2b2c5761d8847b5b97996b0f3208bbb [2023-08-30 12:02:39,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:02:39,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:02:39,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:39,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:02:39,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:02:39,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0e24cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39, skipping insertion in model container [2023-08-30 12:02:39,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:02:39,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:02:39,304 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 12:02:39,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:39,322 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:02:39,355 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2823,2836] [2023-08-30 12:02:39,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:02:39,369 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:39,371 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:02:39,375 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:02:39,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39 WrapperNode [2023-08-30 12:02:39,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:02:39,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:39,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:02:39,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:02:39,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,434 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 288 [2023-08-30 12:02:39,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:02:39,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:02:39,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:02:39,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:02:39,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:02:39,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:02:39,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:02:39,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:02:39,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (1/1) ... [2023-08-30 12:02:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:02:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:39,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 12:02:39,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 12:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:02:39,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:02:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 12:02:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 12:02:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 12:02:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 12:02:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 12:02:39,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 12:02:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:02:39,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:02:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:02:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 12:02:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:02:39,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:02:39,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:02:39,549 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:02:39,672 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:02:39,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:02:40,114 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:02:40,367 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:02:40,368 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 12:02:40,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:40 BoogieIcfgContainer [2023-08-30 12:02:40,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:02:40,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:02:40,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:02:40,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:02:40,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:02:39" (1/3) ... [2023-08-30 12:02:40,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9a10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:40, skipping insertion in model container [2023-08-30 12:02:40,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:02:39" (2/3) ... [2023-08-30 12:02:40,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9a10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:02:40, skipping insertion in model container [2023-08-30 12:02:40,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:02:40" (3/3) ... [2023-08-30 12:02:40,376 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-08-30 12:02:40,381 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:02:40,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:02:40,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 12:02:40,388 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:02:40,478 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 12:02:40,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 12:02:40,643 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-08-30 12:02:40,643 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:02:40,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 31/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-08-30 12:02:40,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 359 transitions, 742 flow [2023-08-30 12:02:40,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 335 transitions, 688 flow [2023-08-30 12:02:40,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:02:40,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 12:02:40,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 335 transitions, 688 flow [2023-08-30 12:02:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 688 flow [2023-08-30 12:02:40,710 INFO L130 PetriNetUnfolder]: 30/335 cut-off events. [2023-08-30 12:02:40,711 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:02:40,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 335 events. 30/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-08-30 12:02:40,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2023-08-30 12:02:56,024 INFO L134 LiptonReduction]: Checked pairs total: 8688 [2023-08-30 12:02:56,025 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-08-30 12:02:56,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:02:56,065 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2fdf3e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:02:56,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-08-30 12:02:56,066 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 12:02:56,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:02:56,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:56,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 12:02:56,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:02:56,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 47728, now seen corresponding path program 1 times [2023-08-30 12:02:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:56,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774231481] [2023-08-30 12:02:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:56,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:56,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774231481] [2023-08-30 12:02:56,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774231481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:56,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:56,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:02:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185892279] [2023-08-30 12:02:56,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:56,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 12:02:56,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:56,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:56,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 12:02:56,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:57,552 INFO L130 PetriNetUnfolder]: 7903/10259 cut-off events. [2023-08-30 12:02:57,553 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 12:02:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20817 conditions, 10259 events. 7903/10259 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50743 event pairs, 4208 based on Foata normal form. 0/4235 useless extension candidates. Maximal degree in co-relation 9320. Up to 5058 conditions per place. [2023-08-30 12:02:57,611 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 95 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-08-30 12:02:57,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 448 flow [2023-08-30 12:02:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-08-30 12:02:57,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778523489932886 [2023-08-30 12:02:57,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-08-30 12:02:57,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-08-30 12:02:57,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:57,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-08-30 12:02:57,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:57,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:57,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:57,649 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 1068 transitions. [2023-08-30 12:02:57,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 448 flow [2023-08-30 12:02:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 12:02:57,671 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 178 flow [2023-08-30 12:02:57,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-08-30 12:02:57,676 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 12:02:57,678 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 178 flow [2023-08-30 12:02:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:57,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:57,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:02:57,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:02:57,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:02:57,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1480951, now seen corresponding path program 1 times [2023-08-30 12:02:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:57,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482570863] [2023-08-30 12:02:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482570863] [2023-08-30 12:02:57,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482570863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:02:57,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:02:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:02:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419222877] [2023-08-30 12:02:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:02:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:02:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:02:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:02:57,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 12:02:57,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:57,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:57,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 12:02:57,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:02:59,343 INFO L130 PetriNetUnfolder]: 7903/10256 cut-off events. [2023-08-30 12:02:59,343 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 12:02:59,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 10256 events. 7903/10256 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50867 event pairs, 4208 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 10253. Up to 10104 conditions per place. [2023-08-30 12:02:59,396 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 55 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-08-30 12:02:59,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 278 flow [2023-08-30 12:02:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:02:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:02:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-30 12:02:59,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469798657718121 [2023-08-30 12:02:59,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-30 12:02:59,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-30 12:02:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:02:59,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-30 12:02:59,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:59,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:59,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:59,405 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 178 flow. Second operand 3 states and 999 transitions. [2023-08-30 12:02:59,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 278 flow [2023-08-30 12:02:59,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:02:59,407 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 156 flow [2023-08-30 12:02:59,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-08-30 12:02:59,408 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 12:02:59,408 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 156 flow [2023-08-30 12:02:59,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:59,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:02:59,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 12:02:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:02:59,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:02:59,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:02:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1480949, now seen corresponding path program 1 times [2023-08-30 12:02:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:02:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273355297] [2023-08-30 12:02:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:59,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:02:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:02:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273355297] [2023-08-30 12:02:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273355297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:02:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131208271] [2023-08-30 12:02:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:02:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:02:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:02:59,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:02:59,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:02:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:02:59,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:02:59,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:02:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:59,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:02:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:02:59,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131208271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:02:59,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:02:59,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:02:59,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662099349] [2023-08-30 12:02:59,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:02:59,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:02:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:02:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:02:59,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:02:59,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-08-30 12:02:59,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:02:59,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:02:59,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-08-30 12:02:59,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:02,327 INFO L130 PetriNetUnfolder]: 19756/25634 cut-off events. [2023-08-30 12:03:02,327 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 12:03:02,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51327 conditions, 25634 events. 19756/25634 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141218 event pairs, 10520 based on Foata normal form. 0/10621 useless extension candidates. Maximal degree in co-relation 51319. Up to 5056 conditions per place. [2023-08-30 12:03:02,432 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 218 selfloop transitions, 21 changer transitions 0/243 dead transitions. [2023-08-30 12:03:02,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 243 transitions, 1054 flow [2023-08-30 12:03:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:03:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:03:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2138 transitions. [2023-08-30 12:03:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-08-30 12:03:02,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2138 transitions. [2023-08-30 12:03:02,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2138 transitions. [2023-08-30 12:03:02,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:02,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2138 transitions. [2023-08-30 12:03:02,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:02,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:02,447 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:02,447 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 156 flow. Second operand 6 states and 2138 transitions. [2023-08-30 12:03:02,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 243 transitions, 1054 flow [2023-08-30 12:03:02,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 243 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:02,450 INFO L231 Difference]: Finished difference. Result has 62 places, 75 transitions, 305 flow [2023-08-30 12:03:02,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=75} [2023-08-30 12:03:02,451 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-08-30 12:03:02,451 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 75 transitions, 305 flow [2023-08-30 12:03:02,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:02,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:02,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:03:02,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:02,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:02,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:02,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash 45951744, now seen corresponding path program 1 times [2023-08-30 12:03:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666068477] [2023-08-30 12:03:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666068477] [2023-08-30 12:03:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666068477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:02,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:02,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:02,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539032090] [2023-08-30 12:03:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:02,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:02,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:02,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:02,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 745 [2023-08-30 12:03:02,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:02,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:02,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 745 [2023-08-30 12:03:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:04,935 INFO L130 PetriNetUnfolder]: 19755/25633 cut-off events. [2023-08-30 12:03:04,935 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 12:03:04,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51375 conditions, 25633 events. 19755/25633 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141483 event pairs, 10520 based on Foata normal form. 1/10550 useless extension candidates. Maximal degree in co-relation 51363. Up to 25253 conditions per place. [2023-08-30 12:03:05,054 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 12:03:05,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 441 flow [2023-08-30 12:03:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-08-30 12:03:05,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425055928411633 [2023-08-30 12:03:05,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-08-30 12:03:05,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-08-30 12:03:05,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:05,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-08-30 12:03:05,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:05,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:05,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:05,063 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 305 flow. Second operand 3 states and 989 transitions. [2023-08-30 12:03:05,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 441 flow [2023-08-30 12:03:05,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 411 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:05,068 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 275 flow [2023-08-30 12:03:05,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 12:03:05,069 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-30 12:03:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 275 flow [2023-08-30 12:03:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:05,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:03:05,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:03:05,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:05,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1423279047, now seen corresponding path program 1 times [2023-08-30 12:03:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290472256] [2023-08-30 12:03:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:05,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290472256] [2023-08-30 12:03:05,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290472256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:05,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:05,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:03:05,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925224077] [2023-08-30 12:03:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:05,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:03:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:03:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:03:05,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 745 [2023-08-30 12:03:05,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:05,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:05,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 745 [2023-08-30 12:03:05,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:06,905 INFO L130 PetriNetUnfolder]: 15805/20511 cut-off events. [2023-08-30 12:03:06,906 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-30 12:03:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20511 events. 15805/20511 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110490 event pairs, 8416 based on Foata normal form. 2/8447 useless extension candidates. Maximal degree in co-relation 41097. Up to 20198 conditions per place. [2023-08-30 12:03:07,021 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 57 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-08-30 12:03:07,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 409 flow [2023-08-30 12:03:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:03:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:03:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2023-08-30 12:03:07,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436241610738255 [2023-08-30 12:03:07,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2023-08-30 12:03:07,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2023-08-30 12:03:07,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:07,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2023-08-30 12:03:07,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:07,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:07,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:07,033 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 275 flow. Second operand 4 states and 1300 transitions. [2023-08-30 12:03:07,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 409 flow [2023-08-30 12:03:07,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 405 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:07,036 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 313 flow [2023-08-30 12:03:07,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-08-30 12:03:07,037 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 12:03:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 313 flow [2023-08-30 12:03:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:07,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:07,038 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 12:03:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:03:07,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:07,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1170711598, now seen corresponding path program 2 times [2023-08-30 12:03:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393972231] [2023-08-30 12:03:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:07,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:07,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393972231] [2023-08-30 12:03:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393972231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577364628] [2023-08-30 12:03:07,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:07,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:07,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 12:03:07,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:07,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:07,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:07,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 12:03:07,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577364628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:07,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:07,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 12:03:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814958473] [2023-08-30 12:03:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:07,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:07,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:03:07,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-08-30 12:03:07,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:07,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:07,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-08-30 12:03:07,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:08,926 INFO L130 PetriNetUnfolder]: 15805/20510 cut-off events. [2023-08-30 12:03:08,927 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-08-30 12:03:08,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 20510 events. 15805/20510 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110426 event pairs, 8416 based on Foata normal form. 1/8447 useless extension candidates. Maximal degree in co-relation 41123. Up to 20201 conditions per place. [2023-08-30 12:03:09,073 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-08-30 12:03:09,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 439 flow [2023-08-30 12:03:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-08-30 12:03:09,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966442953020136 [2023-08-30 12:03:09,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-08-30 12:03:09,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-08-30 12:03:09,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:09,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-08-30 12:03:09,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:09,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:09,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:09,082 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 313 flow. Second operand 3 states and 1005 transitions. [2023-08-30 12:03:09,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 439 flow [2023-08-30 12:03:09,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:09,085 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 300 flow [2023-08-30 12:03:09,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-08-30 12:03:09,086 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2023-08-30 12:03:09,086 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 300 flow [2023-08-30 12:03:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:09,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:09,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:09,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:03:09,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:09,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:09,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529539, now seen corresponding path program 1 times [2023-08-30 12:03:09,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:09,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348187309] [2023-08-30 12:03:09,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:09,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:09,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348187309] [2023-08-30 12:03:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348187309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092901962] [2023-08-30 12:03:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:09,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:09,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:09,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 12:03:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 12:03:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:09,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 12:03:09,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:09,727 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:09,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:09,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:09,773 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_208 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_208) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-08-30 12:03:09,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:09,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-30 12:03:09,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:09,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-30 12:03:09,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-08-30 12:03:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-30 12:03:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092901962] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:09,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 12:03:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449619217] [2023-08-30 12:03:09,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:03:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:03:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-08-30 12:03:09,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 12:03:09,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:09,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:09,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 12:03:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:11,929 INFO L130 PetriNetUnfolder]: 15805/20506 cut-off events. [2023-08-30 12:03:11,929 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-08-30 12:03:11,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41122 conditions, 20506 events. 15805/20506 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110543 event pairs, 8416 based on Foata normal form. 0/8446 useless extension candidates. Maximal degree in co-relation 41107. Up to 20165 conditions per place. [2023-08-30 12:03:12,067 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-08-30 12:03:12,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 430 flow [2023-08-30 12:03:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:03:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:03:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1655 transitions. [2023-08-30 12:03:12,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024608501118567 [2023-08-30 12:03:12,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1655 transitions. [2023-08-30 12:03:12,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1655 transitions. [2023-08-30 12:03:12,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:12,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1655 transitions. [2023-08-30 12:03:12,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:12,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:12,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:12,116 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 300 flow. Second operand 6 states and 1655 transitions. [2023-08-30 12:03:12,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 430 flow [2023-08-30 12:03:12,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:12,119 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 312 flow [2023-08-30 12:03:12,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-08-30 12:03:12,121 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 12:03:12,121 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 312 flow [2023-08-30 12:03:12,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:12,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:12,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:12,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:12,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:12,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529549, now seen corresponding path program 1 times [2023-08-30 12:03:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300539125] [2023-08-30 12:03:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:12,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300539125] [2023-08-30 12:03:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300539125] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863204799] [2023-08-30 12:03:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:12,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:12,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:12,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:12,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 12:03:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:12,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 12:03:12,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:12,825 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 12:03:12,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 12:03:12,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:12,869 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 12:03:12,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 12:03:12,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:12,917 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:12,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:12,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:12,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:13,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:13,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-08-30 12:03:13,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:13,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-08-30 12:03:13,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-30 12:03:13,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-08-30 12:03:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863204799] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:13,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 12:03:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364364611] [2023-08-30 12:03:13,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:13,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:03:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:03:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=191, Unknown=2, NotChecked=0, Total=240 [2023-08-30 12:03:15,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:03:15,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 12:03:15,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 312 flow. Second operand has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:15,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:15,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 12:03:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:17,050 INFO L130 PetriNetUnfolder]: 15805/20502 cut-off events. [2023-08-30 12:03:17,050 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 12:03:17,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41121 conditions, 20502 events. 15805/20502 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110435 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41106. Up to 20165 conditions per place. [2023-08-30 12:03:17,176 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2023-08-30 12:03:17,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 440 flow [2023-08-30 12:03:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:03:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:03:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-08-30 12:03:17,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002237136465327 [2023-08-30 12:03:17,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-08-30 12:03:17,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-08-30 12:03:17,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:17,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-08-30 12:03:17,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.6666666666667) internal successors, (1654), 6 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:17,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:17,192 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:17,192 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 312 flow. Second operand 6 states and 1654 transitions. [2023-08-30 12:03:17,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 440 flow [2023-08-30 12:03:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 413 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 12:03:17,196 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 307 flow [2023-08-30 12:03:17,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-30 12:03:17,199 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 12:03:17,199 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 307 flow [2023-08-30 12:03:17,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:17,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:17,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:17,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:17,406 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:17,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529548, now seen corresponding path program 1 times [2023-08-30 12:03:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:17,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970021314] [2023-08-30 12:03:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:17,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:17,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970021314] [2023-08-30 12:03:17,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970021314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899822956] [2023-08-30 12:03:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:17,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:17,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:03:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:17,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-30 12:03:17,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:17,898 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 12:03:17,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 12:03:17,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:17,967 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 12:03:17,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 12:03:17,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:18,025 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:18,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:18,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:03:18,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:18,206 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2023-08-30 12:03:18,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:18,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 12:03:18,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:18,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-08-30 12:03:18,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-08-30 12:03:18,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-08-30 12:03:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 12:03:18,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899822956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:18,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-30 12:03:18,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113813103] [2023-08-30 12:03:18,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:18,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 12:03:18,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:18,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 12:03:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=245, Unknown=2, NotChecked=32, Total=342 [2023-08-30 12:03:18,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 745 [2023-08-30 12:03:18,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 307 flow. Second operand has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:18,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:18,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 745 [2023-08-30 12:03:18,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:20,209 INFO L130 PetriNetUnfolder]: 15805/20498 cut-off events. [2023-08-30 12:03:20,209 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-08-30 12:03:20,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 20498 events. 15805/20498 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110491 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41093. Up to 20165 conditions per place. [2023-08-30 12:03:20,287 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2023-08-30 12:03:20,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 433 flow [2023-08-30 12:03:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:03:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:03:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2023-08-30 12:03:20,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35369127516778526 [2023-08-30 12:03:20,291 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2023-08-30 12:03:20,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2023-08-30 12:03:20,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:20,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2023-08-30 12:03:20,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:20,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:20,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:20,299 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 307 flow. Second operand 6 states and 1581 transitions. [2023-08-30 12:03:20,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 433 flow [2023-08-30 12:03:20,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:03:20,301 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 325 flow [2023-08-30 12:03:20,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-08-30 12:03:20,301 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-30 12:03:20,301 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 325 flow [2023-08-30 12:03:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:20,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:20,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:20,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:20,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:20,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529536, now seen corresponding path program 1 times [2023-08-30 12:03:20,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:20,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901311580] [2023-08-30 12:03:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901311580] [2023-08-30 12:03:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901311580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878164887] [2023-08-30 12:03:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:20,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:20,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:20,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:03:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:20,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 12:03:20,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:20,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 12:03:20,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:20,809 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:20,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:20,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:20,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:20,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:20,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 12:03:20,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:20,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 12:03:20,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 12:03:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878164887] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:20,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:20,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 12:03:20,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002209728] [2023-08-30 12:03:20,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:03:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:03:20,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2023-08-30 12:03:21,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-08-30 12:03:21,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:21,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:21,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-08-30 12:03:21,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:22,723 INFO L130 PetriNetUnfolder]: 15805/20494 cut-off events. [2023-08-30 12:03:22,723 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2023-08-30 12:03:22,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41107 conditions, 20494 events. 15805/20494 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 110363 event pairs, 8416 based on Foata normal form. 4/8450 useless extension candidates. Maximal degree in co-relation 41092. Up to 20165 conditions per place. [2023-08-30 12:03:22,806 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 51 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2023-08-30 12:03:22,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 449 flow [2023-08-30 12:03:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:03:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:03:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-08-30 12:03:22,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36957494407158836 [2023-08-30 12:03:22,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-08-30 12:03:22,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-08-30 12:03:22,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:22,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-08-30 12:03:22,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:22,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:22,816 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:22,816 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 325 flow. Second operand 6 states and 1652 transitions. [2023-08-30 12:03:22,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 449 flow [2023-08-30 12:03:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 409 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 12:03:22,818 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 307 flow [2023-08-30 12:03:22,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-30 12:03:22,818 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 12:03:22,818 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 307 flow [2023-08-30 12:03:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:22,819 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 12:03:22,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:23,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:23,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:23,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash 955798492, now seen corresponding path program 1 times [2023-08-30 12:03:23,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:23,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832576705] [2023-08-30 12:03:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:23,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 12:03:23,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832576705] [2023-08-30 12:03:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832576705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935811084] [2023-08-30 12:03:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:23,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:23,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:23,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:23,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:03:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:23,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 12:03:23,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:23,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:23,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935811084] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:23,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 12:03:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066146344] [2023-08-30 12:03:23,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:03:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:03:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:03:23,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 745 [2023-08-30 12:03:23,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:23,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:23,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 745 [2023-08-30 12:03:23,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:25,445 INFO L130 PetriNetUnfolder]: 18831/24440 cut-off events. [2023-08-30 12:03:25,445 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-08-30 12:03:25,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49010 conditions, 24440 events. 18831/24440 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 133438 event pairs, 10030 based on Foata normal form. 2/10228 useless extension candidates. Maximal degree in co-relation 48996. Up to 15123 conditions per place. [2023-08-30 12:03:25,563 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 119 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2023-08-30 12:03:25,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 145 transitions, 788 flow [2023-08-30 12:03:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:03:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:03:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2023-08-30 12:03:25,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818791946308726 [2023-08-30 12:03:25,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2023-08-30 12:03:25,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2023-08-30 12:03:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2023-08-30 12:03:25,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:25,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:25,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:25,578 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 307 flow. Second operand 9 states and 2871 transitions. [2023-08-30 12:03:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 145 transitions, 788 flow [2023-08-30 12:03:25,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 12:03:25,581 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 368 flow [2023-08-30 12:03:25,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-08-30 12:03:25,581 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-30 12:03:25,581 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 368 flow [2023-08-30 12:03:25,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:25,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:25,583 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 12:03:25,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:25,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:25,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:25,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:25,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1575423709, now seen corresponding path program 2 times [2023-08-30 12:03:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263617354] [2023-08-30 12:03:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263617354] [2023-08-30 12:03:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263617354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850199408] [2023-08-30 12:03:25,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:25,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:25,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:25,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:25,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 12:03:25,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 12:03:25,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:03:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 12:03:25,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:03:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850199408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:03:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-30 12:03:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206320596] [2023-08-30 12:03:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:03:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:03:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:03:26,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 745 [2023-08-30 12:03:26,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:26,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:26,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 745 [2023-08-30 12:03:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:27,439 INFO L130 PetriNetUnfolder]: 17448/22677 cut-off events. [2023-08-30 12:03:27,439 INFO L131 PetriNetUnfolder]: For 2215/2215 co-relation queries the response was YES. [2023-08-30 12:03:27,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45482 conditions, 22677 events. 17448/22677 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 122414 event pairs, 9295 based on Foata normal form. 695/10232 useless extension candidates. Maximal degree in co-relation 45466. Up to 22337 conditions per place. [2023-08-30 12:03:27,568 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 65 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 12:03:27,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 470 flow [2023-08-30 12:03:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-08-30 12:03:27,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474272930648767 [2023-08-30 12:03:27,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-08-30 12:03:27,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-08-30 12:03:27,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:27,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-08-30 12:03:27,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:27,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:27,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:27,575 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 368 flow. Second operand 3 states and 994 transitions. [2023-08-30 12:03:27,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 470 flow [2023-08-30 12:03:27,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 407 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 12:03:27,577 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 277 flow [2023-08-30 12:03:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-30 12:03:27,577 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-08-30 12:03:27,578 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 277 flow [2023-08-30 12:03:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:27,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:27,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:27,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 12:03:27,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 12:03:27,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:27,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 282061342, now seen corresponding path program 1 times [2023-08-30 12:03:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:27,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404149962] [2023-08-30 12:03:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404149962] [2023-08-30 12:03:27,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404149962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:27,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:27,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:27,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754903329] [2023-08-30 12:03:27,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:27,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:27,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:27,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:27,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:27,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 12:03:27,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:27,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:27,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 12:03:27,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:29,536 INFO L130 PetriNetUnfolder]: 26243/35227 cut-off events. [2023-08-30 12:03:29,537 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2023-08-30 12:03:29,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71033 conditions, 35227 events. 26243/35227 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 208892 event pairs, 10010 based on Foata normal form. 0/16872 useless extension candidates. Maximal degree in co-relation 71021. Up to 19928 conditions per place. [2023-08-30 12:03:29,733 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 97 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 12:03:29,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 543 flow [2023-08-30 12:03:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-08-30 12:03:29,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-30 12:03:29,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-08-30 12:03:29,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-08-30 12:03:29,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:29,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-08-30 12:03:29,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:29,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:29,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:29,740 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 277 flow. Second operand 3 states and 1043 transitions. [2023-08-30 12:03:29,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 543 flow [2023-08-30 12:03:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:29,742 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 288 flow [2023-08-30 12:03:29,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-08-30 12:03:29,742 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 12:03:29,742 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 288 flow [2023-08-30 12:03:29,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:29,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:29,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:03:29,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:29,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 282061337, now seen corresponding path program 1 times [2023-08-30 12:03:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980969310] [2023-08-30 12:03:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980969310] [2023-08-30 12:03:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980969310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100305226] [2023-08-30 12:03:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:29,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:29,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:29,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:29,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 12:03:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:29,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:03:29,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:29,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:30,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100305226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:30,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:30,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-30 12:03:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200168678] [2023-08-30 12:03:30,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:03:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:03:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:03:30,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 12:03:30,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:30,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:30,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 12:03:30,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:31,742 INFO L130 PetriNetUnfolder]: 16969/23187 cut-off events. [2023-08-30 12:03:31,742 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2023-08-30 12:03:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48638 conditions, 23187 events. 16969/23187 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 135558 event pairs, 8841 based on Foata normal form. 248/12743 useless extension candidates. Maximal degree in co-relation 48625. Up to 16918 conditions per place. [2023-08-30 12:03:31,827 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 116 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2023-08-30 12:03:31,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 713 flow [2023-08-30 12:03:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:03:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:03:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2531 transitions. [2023-08-30 12:03:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42466442953020134 [2023-08-30 12:03:31,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2531 transitions. [2023-08-30 12:03:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2531 transitions. [2023-08-30 12:03:31,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:31,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2531 transitions. [2023-08-30 12:03:31,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 316.375) internal successors, (2531), 8 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:31,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:31,840 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:31,840 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 288 flow. Second operand 8 states and 2531 transitions. [2023-08-30 12:03:31,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 713 flow [2023-08-30 12:03:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:31,846 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 365 flow [2023-08-30 12:03:31,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-30 12:03:31,847 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-30 12:03:31,847 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 365 flow [2023-08-30 12:03:31,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:31,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:31,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:31,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:32,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 12:03:32,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:32,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:32,054 INFO L85 PathProgramCache]: Analyzing trace with hash -154369339, now seen corresponding path program 1 times [2023-08-30 12:03:32,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726140710] [2023-08-30 12:03:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:32,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:32,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726140710] [2023-08-30 12:03:32,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726140710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688790950] [2023-08-30 12:03:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:32,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:32,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:32,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 12:03:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:32,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 12:03:32,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:32,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:32,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688790950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:32,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:32,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 12:03:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101461950] [2023-08-30 12:03:32,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:03:32,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:03:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:03:32,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-08-30 12:03:32,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 365 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:32,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:32,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-08-30 12:03:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:34,003 INFO L130 PetriNetUnfolder]: 13627/18958 cut-off events. [2023-08-30 12:03:34,003 INFO L131 PetriNetUnfolder]: For 2926/3562 co-relation queries the response was YES. [2023-08-30 12:03:34,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43889 conditions, 18958 events. 13627/18958 cut-off events. For 2926/3562 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 118064 event pairs, 7331 based on Foata normal form. 636/11464 useless extension candidates. Maximal degree in co-relation 43872. Up to 14011 conditions per place. [2023-08-30 12:03:34,125 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 102 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2023-08-30 12:03:34,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 750 flow [2023-08-30 12:03:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:03:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:03:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2512 transitions. [2023-08-30 12:03:34,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214765100671141 [2023-08-30 12:03:34,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2512 transitions. [2023-08-30 12:03:34,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2512 transitions. [2023-08-30 12:03:34,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:34,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2512 transitions. [2023-08-30 12:03:34,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:34,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:34,137 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:34,137 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 365 flow. Second operand 8 states and 2512 transitions. [2023-08-30 12:03:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 750 flow [2023-08-30 12:03:34,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 726 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:03:34,147 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 410 flow [2023-08-30 12:03:34,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-30 12:03:34,148 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 12:03:34,148 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 410 flow [2023-08-30 12:03:34,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:34,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:34,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:34,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:34,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 12:03:34,354 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:34,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436720, now seen corresponding path program 1 times [2023-08-30 12:03:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650484158] [2023-08-30 12:03:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 12:03:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650484158] [2023-08-30 12:03:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650484158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:03:34,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:03:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:03:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833524758] [2023-08-30 12:03:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:03:34,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:03:34,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:03:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:03:34,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-08-30 12:03:34,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:34,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:34,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-08-30 12:03:34,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:36,339 INFO L130 PetriNetUnfolder]: 20291/28006 cut-off events. [2023-08-30 12:03:36,339 INFO L131 PetriNetUnfolder]: For 7221/8141 co-relation queries the response was YES. [2023-08-30 12:03:36,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69729 conditions, 28006 events. 20291/28006 cut-off events. For 7221/8141 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 179992 event pairs, 10260 based on Foata normal form. 920/19077 useless extension candidates. Maximal degree in co-relation 69708. Up to 18987 conditions per place. [2023-08-30 12:03:36,504 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 100 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-30 12:03:36,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 709 flow [2023-08-30 12:03:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:03:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:03:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-30 12:03:36,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657718120805369 [2023-08-30 12:03:36,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-30 12:03:36,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-30 12:03:36,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:36,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-30 12:03:36,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:36,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:36,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:36,511 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 410 flow. Second operand 3 states and 1041 transitions. [2023-08-30 12:03:36,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 709 flow [2023-08-30 12:03:36,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 685 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:03:36,531 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 400 flow [2023-08-30 12:03:36,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-30 12:03:36,531 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 12:03:36,532 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 400 flow [2023-08-30 12:03:36,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:36,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:36,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:36,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:03:36,532 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:36,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash 462161766, now seen corresponding path program 1 times [2023-08-30 12:03:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:36,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048866323] [2023-08-30 12:03:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:03:37,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:37,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048866323] [2023-08-30 12:03:37,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048866323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:37,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345387188] [2023-08-30 12:03:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:37,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:37,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:37,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 12:03:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 12:03:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:37,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 12:03:37,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:37,452 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:37,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:37,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:37,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:37,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:37,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:37,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:37,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:37,602 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_733) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-08-30 12:03:37,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:37,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-08-30 12:03:37,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:37,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1105 treesize of output 1057 [2023-08-30 12:03:37,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 12:03:37,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2023-08-30 12:03:37,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-08-30 12:03:37,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:37,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 12:03:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 12:03:37,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345387188] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:37,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-08-30 12:03:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630295336] [2023-08-30 12:03:37,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:37,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 12:03:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 12:03:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=699, Unknown=14, NotChecked=54, Total=870 [2023-08-30 12:03:38,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 745 [2023-08-30 12:03:38,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 400 flow. Second operand has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:38,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:38,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 745 [2023-08-30 12:03:38,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:42,684 INFO L130 PetriNetUnfolder]: 29863/41553 cut-off events. [2023-08-30 12:03:42,684 INFO L131 PetriNetUnfolder]: For 13056/13173 co-relation queries the response was YES. [2023-08-30 12:03:42,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106882 conditions, 41553 events. 29863/41553 cut-off events. For 13056/13173 co-relation queries the response was YES. Maximal size of possible extension queue 2345. Compared 272929 event pairs, 6243 based on Foata normal form. 117/26527 useless extension candidates. Maximal degree in co-relation 106860. Up to 16600 conditions per place. [2023-08-30 12:03:42,941 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 207 selfloop transitions, 54 changer transitions 0/265 dead transitions. [2023-08-30 12:03:42,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 265 transitions, 1512 flow [2023-08-30 12:03:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 12:03:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 12:03:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5746 transitions. [2023-08-30 12:03:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33533702947184124 [2023-08-30 12:03:42,950 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5746 transitions. [2023-08-30 12:03:42,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5746 transitions. [2023-08-30 12:03:42,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:42,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5746 transitions. [2023-08-30 12:03:42,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 249.82608695652175) internal successors, (5746), 23 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:42,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:42,970 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:42,971 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 400 flow. Second operand 23 states and 5746 transitions. [2023-08-30 12:03:42,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 265 transitions, 1512 flow [2023-08-30 12:03:43,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 1506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:03:43,009 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 701 flow [2023-08-30 12:03:43,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=701, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2023-08-30 12:03:43,010 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-08-30 12:03:43,010 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 701 flow [2023-08-30 12:03:43,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:43,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:43,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:43,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 12:03:43,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:03:43,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:43,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:43,218 INFO L85 PathProgramCache]: Analyzing trace with hash 462161765, now seen corresponding path program 2 times [2023-08-30 12:03:43,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:43,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251433114] [2023-08-30 12:03:43,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:43,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 12:03:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:43,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251433114] [2023-08-30 12:03:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251433114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916223525] [2023-08-30 12:03:43,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:03:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:43,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:43,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:43,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 12:03:43,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:03:43,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:03:43,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-30 12:03:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:43,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 12:03:43,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:44,026 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:44,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:44,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:44,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:44,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:44,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:44,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:03:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:44,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:44,178 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 12:03:44,212 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_807 (Array Int Int)) (v_ArrVal_806 (Array Int Int)) (v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_806) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_807) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-08-30 12:03:44,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:44,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-30 12:03:44,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:44,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 299 [2023-08-30 12:03:44,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 122 [2023-08-30 12:03:44,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 12:03:44,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 12:03:44,462 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:44,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 12:03:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-30 12:03:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916223525] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:44,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-08-30 12:03:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571781060] [2023-08-30 12:03:44,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 12:03:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 12:03:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=508, Unknown=5, NotChecked=94, Total=702 [2023-08-30 12:03:44,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-08-30 12:03:44,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 701 flow. Second operand has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:44,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:44,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-08-30 12:03:44,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:03:47,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:03:49,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:03:51,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:03:54,922 INFO L130 PetriNetUnfolder]: 29729/41393 cut-off events. [2023-08-30 12:03:54,922 INFO L131 PetriNetUnfolder]: For 28871/28986 co-relation queries the response was YES. [2023-08-30 12:03:55,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113674 conditions, 41393 events. 29729/41393 cut-off events. For 28871/28986 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 272918 event pairs, 6521 based on Foata normal form. 115/27967 useless extension candidates. Maximal degree in co-relation 113646. Up to 24810 conditions per place. [2023-08-30 12:03:55,206 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 128 selfloop transitions, 54 changer transitions 0/186 dead transitions. [2023-08-30 12:03:55,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 186 transitions, 1285 flow [2023-08-30 12:03:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:03:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:03:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4015 transitions. [2023-08-30 12:03:55,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592841163310962 [2023-08-30 12:03:55,210 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4015 transitions. [2023-08-30 12:03:55,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4015 transitions. [2023-08-30 12:03:55,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:03:55,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4015 transitions. [2023-08-30 12:03:55,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 267.6666666666667) internal successors, (4015), 15 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:55,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 745.0) internal successors, (11920), 16 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:55,258 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 745.0) internal successors, (11920), 16 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:55,259 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 701 flow. Second operand 15 states and 4015 transitions. [2023-08-30 12:03:55,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 186 transitions, 1285 flow [2023-08-30 12:03:55,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 186 transitions, 1246 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 12:03:55,307 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 784 flow [2023-08-30 12:03:55,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=784, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2023-08-30 12:03:55,308 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 51 predicate places. [2023-08-30 12:03:55,308 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 784 flow [2023-08-30 12:03:55,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:55,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:03:55,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:03:55,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 12:03:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 12:03:55,515 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:03:55,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:03:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 462161769, now seen corresponding path program 1 times [2023-08-30 12:03:55,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:03:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441114787] [2023-08-30 12:03:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:03:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:56,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:03:56,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441114787] [2023-08-30 12:03:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441114787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:03:56,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255196908] [2023-08-30 12:03:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:03:56,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:03:56,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:03:56,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:03:56,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 12:03:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:03:56,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 12:03:56,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:03:56,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:56,268 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 12:03:56,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 12:03:56,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:03:56,375 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 12:03:56,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 12:03:56,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,494 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:03:56,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:03:56,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:56,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:03:56,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:03:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:03:57,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:57,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-08-30 12:03:57,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:03:57,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2193 treesize of output 2145 [2023-08-30 12:03:57,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2023-08-30 12:03:57,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-08-30 12:03:57,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2023-08-30 12:03:57,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 198 [2023-08-30 12:03:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:03:57,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255196908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:03:57,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:03:57,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 12:03:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124155168] [2023-08-30 12:03:57,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:03:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 12:03:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:03:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 12:03:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=705, Unknown=15, NotChecked=0, Total=870 [2023-08-30 12:03:58,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 745 [2023-08-30 12:03:58,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 784 flow. Second operand has 30 states, 30 states have (on average 260.4) internal successors, (7812), 30 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:03:58,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:03:58,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 745 [2023-08-30 12:03:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:01,600 INFO L130 PetriNetUnfolder]: 28564/39710 cut-off events. [2023-08-30 12:04:01,600 INFO L131 PetriNetUnfolder]: For 39856/39975 co-relation queries the response was YES. [2023-08-30 12:04:01,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113324 conditions, 39710 events. 28564/39710 cut-off events. For 39856/39975 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 259581 event pairs, 8932 based on Foata normal form. 119/27884 useless extension candidates. Maximal degree in co-relation 113296. Up to 34590 conditions per place. [2023-08-30 12:04:01,859 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 133 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2023-08-30 12:04:01,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 170 transitions, 1308 flow [2023-08-30 12:04:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:04:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:04:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2442 transitions. [2023-08-30 12:04:01,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642058165548098 [2023-08-30 12:04:01,862 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2442 transitions. [2023-08-30 12:04:01,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2442 transitions. [2023-08-30 12:04:01,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:01,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2442 transitions. [2023-08-30 12:04:01,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.3333333333333) internal successors, (2442), 9 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:01,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:01,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:01,868 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 784 flow. Second operand 9 states and 2442 transitions. [2023-08-30 12:04:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 170 transitions, 1308 flow [2023-08-30 12:04:01,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 170 transitions, 1246 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-30 12:04:01,944 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 837 flow [2023-08-30 12:04:01,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-08-30 12:04:01,945 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 51 predicate places. [2023-08-30 12:04:01,945 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 837 flow [2023-08-30 12:04:01,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 260.4) internal successors, (7812), 30 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:01,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:01,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:01,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:02,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:02,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:04:02,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash 462161768, now seen corresponding path program 1 times [2023-08-30 12:04:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:02,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534536049] [2023-08-30 12:04:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:04:02,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:04:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534536049] [2023-08-30 12:04:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534536049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:04:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723830936] [2023-08-30 12:04:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:02,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:02,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:04:02,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:04:02,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 12:04:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:04:02,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-30 12:04:02,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:04:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:04:02,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:04:02,990 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 12:04:02,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 12:04:03,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 12:04:03,085 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 12:04:03,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 12:04:03,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,174 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 12:04:03,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:04:03,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:04:03,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 12:04:03,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 12:04:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 12:04:03,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:04:07,609 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse3 0) (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2023-08-30 12:04:12,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:12,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 214 [2023-08-30 12:04:12,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:12,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3167629 treesize of output 3118429 [2023-08-30 12:04:13,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:13,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6591 treesize of output 6056 [2023-08-30 12:04:14,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6047 treesize of output 5784 [2023-08-30 12:04:14,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5775 treesize of output 5680 [2023-08-30 12:04:14,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5671 treesize of output 5544 [2023-08-30 12:04:14,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5535 treesize of output 5000 [2023-08-30 12:04:14,469 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4991 treesize of output 4728 [2023-08-30 12:04:14,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4719 treesize of output 4624 [2023-08-30 12:04:14,673 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:04:14,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4615 treesize of output 4488 [2023-08-30 12:04:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:04:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723830936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:04:22,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:04:22,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2023-08-30 12:04:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784329302] [2023-08-30 12:04:22,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:04:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 12:04:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:04:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 12:04:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=741, Unknown=15, NotChecked=56, Total=930 [2023-08-30 12:04:23,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-08-30 12:04:23,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 837 flow. Second operand has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:23,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:04:23,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-08-30 12:04:23,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:04:26,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:28,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:30,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:32,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:34,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:36,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:38,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:40,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:41,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:43,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:46,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:48,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:50,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:52,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:54,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:56,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 12:04:59,265 INFO L130 PetriNetUnfolder]: 27968/38578 cut-off events. [2023-08-30 12:04:59,265 INFO L131 PetriNetUnfolder]: For 41537/41656 co-relation queries the response was YES. [2023-08-30 12:04:59,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112582 conditions, 38578 events. 27968/38578 cut-off events. For 41537/41656 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 245940 event pairs, 9848 based on Foata normal form. 143/28170 useless extension candidates. Maximal degree in co-relation 112553. Up to 33554 conditions per place. [2023-08-30 12:04:59,590 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 127 selfloop transitions, 39 changer transitions 0/170 dead transitions. [2023-08-30 12:04:59,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 170 transitions, 1347 flow [2023-08-30 12:04:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 12:04:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 12:04:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2680 transitions. [2023-08-30 12:04:59,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597315436241611 [2023-08-30 12:04:59,594 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2680 transitions. [2023-08-30 12:04:59,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2680 transitions. [2023-08-30 12:04:59,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:04:59,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2680 transitions. [2023-08-30 12:04:59,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.0) internal successors, (2680), 10 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:59,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:59,601 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:59,601 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 837 flow. Second operand 10 states and 2680 transitions. [2023-08-30 12:04:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 170 transitions, 1347 flow [2023-08-30 12:04:59,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 170 transitions, 1336 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:04:59,664 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 914 flow [2023-08-30 12:04:59,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=914, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2023-08-30 12:04:59,665 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 58 predicate places. [2023-08-30 12:04:59,665 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 914 flow [2023-08-30 12:04:59,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:04:59,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:04:59,667 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:04:59,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 12:04:59,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:04:59,872 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-08-30 12:04:59,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:04:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416826, now seen corresponding path program 1 times [2023-08-30 12:04:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:04:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487245292] [2023-08-30 12:04:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:04:59,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:04:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:05:00,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:05:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487245292] [2023-08-30 12:05:00,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487245292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:05:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486679739] [2023-08-30 12:05:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:05:00,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:05:00,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:05:00,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:05:00,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 12:05:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:05:01,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-30 12:05:01,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:05:01,133 INFO L321 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2023-08-30 12:05:01,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 47 [2023-08-30 12:05:01,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:05:01,244 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 12:05:01,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 12:05:01,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,335 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:05:01,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:05:01,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 12:05:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:05:01,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:05:05,664 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1060 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse2 (select (select .cse0 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_1060 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse4 (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (< 4294967295 .cse4) (<= .cse4 0))))))) is different from false [2023-08-30 12:05:05,719 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse0 (select (select .cse1 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)) (< .cse0 0) (< 0 .cse0))))) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse3 (select (select .cse4 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)) (< 4294967295 .cse3) (<= .cse3 0))))))) is different from false [2023-08-30 12:05:06,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:06,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 238 [2023-08-30 12:05:06,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:06,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28537613 treesize of output 28094448 [2023-08-30 12:05:27,583 WARN L222 SmtUtils]: Spent 20.75s on a formula simplification. DAG size of input: 4697 DAG size of output: 1029 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 12:05:27,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:27,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50767 treesize of output 50248 [2023-08-30 12:05:28,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:28,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50239 treesize of output 49984 [2023-08-30 12:05:28,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:28,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49975 treesize of output 48928 [2023-08-30 12:05:29,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:29,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48919 treesize of output 46816 [2023-08-30 12:05:30,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:30,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46807 treesize of output 42592 [2023-08-30 12:05:31,026 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:31,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42583 treesize of output 41536 [2023-08-30 12:05:31,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:31,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41527 treesize of output 41272 [2023-08-30 12:05:32,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:32,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41263 treesize of output 40744 [2023-08-30 12:05:33,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:33,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40735 treesize of output 36520 [2023-08-30 12:05:33,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:05:33,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36511 treesize of output 34408 Killed by 15